I have disabled my compass, flying exclusively in stabilize mode. I am using the Craft & Theory FrSky telemetry cable and the bad compass message repeats and is very annoying. Seems that the only way to stop it is to turn the volume off but I would like to get other alerts. This is not a pre-arm check, this is on the Mission Planner screen in big red letters for the entire flight. Is there a way to tell mission planner to ignore the disabled compass or hide the message, therefore not sending it to my transmitter?

Are you also using the C&T application? If so give the Yaapu telemetry solution a try instead. I switched to it months ago and prefer it. It shows error messages also but maybe less annoying. It’s Open Source in any case so it’s possible to modify it.